卵巢颗粒细胞瘤的CT表现

目的：分析卵巢颗粒细胞瘤（OGCT）的CT征象,提高对本病的诊断水平。方法：回顾性分析19例经手术病理证实的卵巢颗粒细胞瘤的CT资料,其中11例为初发病例,8例为复发病例。结果：19例OGCT患者共有23个肿瘤,其中14个呈类圆形或圆形,9个呈不规则或分叶状,共有2个囊性肿块,15个囊实性肿块和6个实性肿块。囊性肿块在CT图像上以均匀低密度、无强化的囊性成分为主,囊壁、分隔或壁结节有强化;实性肿块CT表现为肿块大部分为实性,内有单发或多发灶性低密度坏死区;囊实性肿块CT表现为囊性与实性成分大致相等。所有病例增强扫描病灶实性部分呈轻度-中度强化。13例伴腹水,9例伴子宫内膜增厚,19例均无淋巴结肿大。结论：卵巢颗粒细胞瘤的CT表现有一定特征,结合临床和CT有助于对本病的诊断和鉴别诊断。

CT appearances of ovarian granulosa cell tumor

Objective：To describe and analyze CT appearances of ovarian granulosa cell tumor（OGCT） and explore the diagnosis and differential diagnosis of OGCT.Methods：A retrospective analysis of CT images was performed in 19 patients with OGCT,including primary（n=11） and recurrent cases（n=8）.All the lesions were proved by pathology.Results：Of the 23 masses in 19 cases,14 were round or oval and 9 were irregular or lobulated,had cystic（n=2）,mixed cystic and solid（n=15） or solid（n=6） components.Cystic masses presented as uniform low density without enhancement,and enhancement of the cyst wall,internal septations or mural nodule.Solid masses presented as heterogeneous enhancement with solitary or multiple low-density central necrosis.Mixed cystic and solid masses had approximately equivalent cystic and solid components.Solid component of all the OGCT lesions showed slight or moderate enhancement.Thickened endometrium（n=9） and ascites（n=13） were shown in all the 19 cases.No abdominal and pelvic lymphadenopathy was found in all the OGCT cases.Conclusion：OGCT has some specific CT appearances.CT examination combined with clinical manifestations is helpful for accurate diagnosis and differential diagnosis of OGCT.